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Article type: Cover
2002 Volume 24 Issue 2 Pages
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Published: March 25, 2002
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Article type: Appendix
2002 Volume 24 Issue 2 Pages
i-vi
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Article type: Index
2002 Volume 24 Issue 2 Pages
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Article type: Index
2002 Volume 24 Issue 2 Pages
viii-
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Hirokazu IHARA
Article type: Article
2002 Volume 24 Issue 2 Pages
117-118
Published: March 25, 2002
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Hideo NAKAMURA
Article type: Article
2002 Volume 24 Issue 2 Pages
119-120
Published: March 25, 2002
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Kunihiro MASHIKO
Article type: Article
2002 Volume 24 Issue 2 Pages
121-126
Published: March 25, 2002
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Yuko YOKOI
Article type: Article
2002 Volume 24 Issue 2 Pages
127-133
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Shun-ichi TAKANASHI
Article type: Article
2002 Volume 24 Issue 2 Pages
134-140
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Yutaka SUKEGAWA
Article type: Article
2002 Volume 24 Issue 2 Pages
141-146
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Masayoshi SAKAI, Toshihito SHIRAI, Hideo NAKAMURA
Article type: Article
2002 Volume 24 Issue 2 Pages
147-154
Published: March 25, 2002
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Gueorgui Petkov
Article type: Article
2002 Volume 24 Issue 2 Pages
155-164
Published: March 25, 2002
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The paper presents the origin, philosophy, characteristic features, and capacities of an innovative Petri-Nets-based method-Analysis of Topological Reliability of Digraphs (ATRD). It combines the capacities and compensates for the draw-backs of the techniques-Physical Modelling Graph and Petri Nets. Created as an alternative to the traditional Fault and Event Tree method, ATRD has qualities making possible its orientation to events-changes of the system state, as well as to processes-tracing the influence of these changes. Its capacities can be widened with the use of fuzzy rules, neural networks or physical models for obtaining parametric availability of the elements and for modelling possible operator's actions. This allows the integration of the ATRD method in the general scheme for prognosis and decision-making in complex system operation. In addition the unification of the identical elements models, modelling based on the technological criterion of success, treatment of the elements behaviour in terms of possibility and obtaining reliability measures for each element and system make the ATRD method easy for modelling, sensitive and prospective for the search of the balance between risk and safety in complex system use.
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Takeshi NATSUME
Article type: Article
2002 Volume 24 Issue 2 Pages
165-166
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Takeshi NATSUME
Article type: Article
2002 Volume 24 Issue 2 Pages
167-168
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Sei TAKAHASHI
Article type: Article
2002 Volume 24 Issue 2 Pages
169-170
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Yuji HIRAO
Article type: Article
2002 Volume 24 Issue 2 Pages
171-172
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Ryuji KUBOYAMA
Article type: Article
2002 Volume 24 Issue 2 Pages
173-
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Nobuyuki TAHARA
Article type: Article
2002 Volume 24 Issue 2 Pages
174-
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Article type: Appendix
2002 Volume 24 Issue 2 Pages
175-176
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Article type: Appendix
2002 Volume 24 Issue 2 Pages
177-
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Article type: Appendix
2002 Volume 24 Issue 2 Pages
177-
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Article type: Appendix
2002 Volume 24 Issue 2 Pages
178-
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Article type: Appendix
2002 Volume 24 Issue 2 Pages
179-182
Published: March 25, 2002
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Daisuke IWAMOTO, Kazuyuki SUZUKI
Article type: Article
2002 Volume 24 Issue 2 Pages
183-191
Published: March 25, 2002
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Life-testing experiments are necessary to guarantee reliability of new products. In life-testing experiments, two cases occur frequently depending on whether or not the failure time is exactly observable during the experimental period. When the exact failure time of a test piece is unknown, we only know that it has failed before the pre-specified inspection time, or it has been still functioning on that time. That is, binary data are observed. Many authors have investigated the optimal designs based on binary data, but they specified one of the design variables before hand out of "number of the different inspection point," "number of samples which are inspected for each point," and "the inspection points," even for the cases with known parameters. This paper deals with the optimization considering the above three factors simultaneously. As a result, for common eight lifetime distributions, the optimal one is given by the design that the number of the inspection time is two and the numbers of the inspected samples are equal for each points.
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Article type: Appendix
2002 Volume 24 Issue 2 Pages
193-199
Published: March 25, 2002
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Article type: Index
2002 Volume 24 Issue 2 Pages
1-39
Published: March 25, 2002
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Article type: Cover
2002 Volume 24 Issue 2 Pages
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Published: March 25, 2002
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